| ; RUN: llc -mtriple mips64-unknown-freebsd12.0 -relocation-model pic -mcpu=mips4 -target-abi n64 -O2 -verify-machineinstrs -o - %s |
| |
| ; Test that the long branch pass does not crash due to the control flow |
| ; optimizer producing malformed basic block operands due to the backend |
| ; failing to handle debug information around branch instructions. |
| |
| define void @f() !dbg !5 { |
| entry: |
| %cmp = icmp eq i32 undef, 0, !dbg !16 |
| %conv = zext i1 %cmp to i32, !dbg !16 |
| tail call void @llvm.dbg.value(metadata i32 %conv, metadata !11, metadata !DIExpression()), !dbg !17 |
| %tobool = icmp eq i32 undef, 0, !dbg !18 |
| br i1 %tobool, label %if.end, label %cleanup7.critedge, !dbg !21 |
| |
| if.end: ; preds = %entry |
| %call6 = call i32 @j(i32 signext %conv) |
| #4, !dbg !22 |
| br label %cleanup7, !dbg !23 |
| |
| cleanup7.critedge: ; preds = %entry |
| call void @llvm.lifetime.end.p0(i64 4, ptr nonnull undef) #4, !dbg !24 |
| br label %cleanup7 |
| |
| cleanup7: ; preds = %cleanup7.critedge, |
| ret void |
| } |
| |
| declare void @llvm.lifetime.end.p0(i64, ptr nocapture) #1 |
| |
| declare i32 @j(...) |
| |
| declare void @llvm.dbg.value(metadata, metadata, metadata) #3 |
| attributes #1 = { argmemonly nounwind } |
| attributes #3 = { nounwind readnone speculatable } |
| attributes #4 = { nounwind } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!3, !4} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang |
| version 6.0.0", isOptimized: true, runtimeVersion: |
| 0, emissionKind: FullDebug, enums: !2) |
| !1 = !DIFile(filename: |
| "/tmp//<stdin>", directory: |
| "/tmp/") |
| !2 = !{} |
| !3 = !{i32 2, !"Debug Info Version", i32 3} |
| !4 = !{i32 7, !"PIC Level", i32 2} |
| !5 = distinct !DISubprogram(name: "f", scope: !6, file: !6, line: 8, type: !7, |
| isLocal: false, isDefinition: true, scopeLine: 8, isOptimized: true, unit: !0, |
| retainedNodes: !10) |
| !6 = !DIFile(filename: |
| "/tmp/test.c", |
| directory: "/tmp") |
| !7 = !DISubroutineType(types: !8) |
| !8 = !{!9} |
| !9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !10 = !{!11, !12, !14} |
| !11 = !DILocalVariable(name: "e", scope: !5, file: !6, line: 9, type: !9) |
| !12 = !DILocalVariable(name: "g", scope: !13, file: !6, line: 11, type: !9) |
| !13 = distinct !DILexicalBlock(scope: !5, file: !6, line: 10, column: 3) |
| !14 = !DILocalVariable(name: "d", scope: !13, file: !6, line: 12, type: !15) |
| !15 = !DIDerivedType(tag: DW_TAG_typedef, name: "a", file: !6, line: 2, |
| baseType: !9) |
| !16 = !DILocation(line: 9, column: 15, scope: !5) |
| !17 = !DILocation(line: 9, column: 7, scope: !5) |
| !18 = !DILocation(line: 12, column: 5, scope: !19) |
| !19 = distinct !DILexicalBlock(scope: !20, file: !6, line: 12, column: 5) |
| !20 = distinct !DILexicalBlock(scope: !5, file: !6, line: 10, column: 3) |
| !21 = !DILocation(line: 12, column: 5, scope: !20) |
| !22 = !DILocation(line: 16, column: 3, scope: !5) |
| !23 = !DILocation(line: 17, column: 1, scope: !5) |
| !24 = !DILocation(line: 15, column: 3, scope: !5) |